MainActivity.java

package com.sweetzpot.stravazpotsample;

import android.content.Intent;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.app.AppCompatDelegate;
import android.util.Log;
import android.view.View;

import com.sweetzpot.stravazpot.authenticaton.api.AccessScope;
import com.sweetzpot.stravazpot.authenticaton.api.StravaLogin;
import com.sweetzpot.stravazpot.authenticaton.ui.StravaLoginActivity;
import com.sweetzpot.stravazpot.authenticaton.ui.StravaLoginButton;

import static com.sweetzpot.stravazpot.authenticaton.api.ApprovalPrompt.AUTO;

public class MainActivity extends AppCompatActivity {

    static {
        AppCompatDelegate.setCompatVectorFromResourcesEnabled(true);
    }

    private static final int RQ_LOGIN = 1001;

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        StravaLoginButton loginButton = (StravaLoginButton) findViewById(R.id.login_button);
        loginButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                login();
            }
        });
    }

    private void login() {
        Intent intent = StravaLogin.withContext(this)
                                    .withClientID(13874)
                                    .withRedirectURI("http://truizlop.github.io/token_exchange")
                                    .withApprovalPrompt(AUTO)
                                    .withAccessScope(AccessScope.VIEW_PRIVATE_WRITE)
                                    .makeIntent();
        startActivityForResult(intent, RQ_LOGIN);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if(requestCode == RQ_LOGIN && resultCode == RESULT_OK && data != null) {
            Log.d("Strava code", data.getStringExtra(StravaLoginActivity.RESULT_CODE));
        }
    }
}